Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1994-10-03
1997-01-14
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
H02M 114
Patent
active
055946321
ABSTRACT:
An AC/DC harmonic neutralizing power converter. The power converter includes a first rectifier, load output terminals for delivering DC power to a load, and a harmonic neutralizing converter. The first rectifier includes an input to receive AC input power and an output. The harmonic neutralizing converter comprises a power switching inverter and a second rectifier. The power switching inverter includes an input connected to the output of the first rectifier, an LC resonant circuit, and an output. The second rectifier of the harmonic neutralizing converter has an input connected to the output of the inverter and an output connected in voltage additive relationship to the output of the first rectifier. The added outputs of the rectifiers is connected to the load output terminals such that the output voltage on the load output terminals substantially equals the added output voltages of the rectifiers. In this manner, the power converter draws from the power source substantially sinusoidal current of a frequency substantially equal to the frequency of the input signal provided by the AC power source. Various embodiments are also illustrated in which the power converter is controlled without modifying the operating frequency of the resonant circuit of the power switching circuit. This may be accomplished by inclusion of an additional output stage, a bootstrap circuit, and use of a controlled-K resonant transformer in the series resonant circuit. By using series resonant topology within the harmonic neutralizing power converter, harmonic neutralization is accomplished using a topology which is inherently advantageous over pulse width modulation power converters.
REFERENCES:
patent: Re27916 (1974-02-01), Kakalec
patent: Re28359 (1975-03-01), Hart et al.
patent: 2143745 (1938-08-01), Sola
patent: 2896180 (1959-07-01), Brown
patent: 2938180 (1960-05-01), DeWitz
patent: 3122699 (1964-02-01), Schohan
patent: 3148326 (1964-09-01), Baycura et al.
patent: 3253212 (1966-05-01), Wentworth
patent: 3525035 (1970-08-01), Kakalec
patent: 3573605 (1971-04-01), Hart et al.
patent: 3573606 (1971-04-01), Hart et al.
patent: 3965408 (1976-06-01), Higuchi et al.
patent: 4143414 (1979-03-01), Brewster et al.
patent: 4340931 (1982-06-01), Endo et al.
patent: 4730243 (1988-03-01), Glennnon
patent: 4831508 (1989-05-01), Huner
Delco Electronics Corporation
Navarre Mark A.
Nguyen Matthew V.
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